Hello, We are excited to invite you to the 2024 Bonsai Developer Conference, taking place from December 2nd to 4th, 2024, at the Sainsbury Wellcome Centre in London, UK. This event brings together neuroscience researchers, computational scientists, and software engineers with a shared interest in the Bonsai visual reactive programming language. The conference program and additional details can be found at https://conference.bonsai-rx.org/2024/ About Bonsai ------------ Bonsai https://bonsai-rx.org/ is an open-source reactive visual programming language widely use for neuroscience experimental control. Differently from standard programming languages where control flow is specified by composing sequences of instructions, and checking conditional loops for the occurrence of events, in reactive languages https://introtorx.com/ the control flow is specified by composing event streams. By placing asynchronous data streams front and centre, it becomes much easier to succinctly build complex programs manipulating hundreds of parallel data sources and controllers while retaining interoperability and modularity. Bonsai is a visual programming language where programs are laid out graphically. Each node represents a data stream, and edges represent input dependencies between streams. Parameters can be manipulated dynamically and every stream can be inspected at runtime. This graphical approach allows users with no programming experience to create complex asynchronous programs, and experienced Bonsai users to very quickly deploy and manage entire systems and applications. Bonsai is able to interface with a large number of experimental hardware for neuroscience experimental control, allowing researchers to easily build sophisticated experiments. We look forward to see you in London! Best regards, Goncalo Lopes g.lopes@neurogears.org Nicholas Guilbeault n.guilbeault@ucl.ac.uk Joaquin Rapela j.rapela@ucl.ac.uk